Viewport clipping noise(?) with a huge object
When dealing with very large or very small objects it is likely that you run into problems with lack of precision in the depth buffer. 3d engines cannot precisely determine which objects are in front of others, creating z-figthing. The fix is to adjust the Clip Range so that it encompasses your scene, no more, no less.
Select the camera, then in the camera section of the properties window set clip start and clip end.

To visualize the clip range, enable Viewport Display &gt; Show &gt; Limits